| 摘要 |
The invention relates to a radial piston hydraulic motor ( 100 ) and to a method in the control of a radial piston hydraulic motor. The radial piston hydraulic motor ( 100 ) includes a free rotation valve ( 50 ) which is built inside it and includes a spindle ( 19 ). The spindle ( 19 ) is disposed in a spindle cavity ( 20 ) and it is movable in the spindle cavity ( 20 ) such that, in a free rotation situation, shoulders of the spindle ( 19 ) block the inlet and outlet passages of working pressure. In a free rotation situation, springs (U<SUB>1</SUB>, U<SUB>2 </SUB>. . . ) press pistons ( 13 a<SUB>1</SUB> , 13 a<SUB>2 </SUB>. . . ) and press rollers ( 14 a<SUB>1</SUB> , 14 a<SUB>2 </SUB>. . . ) associated therewith to a bottom position and out of contact with a cam ring ( 11 ).
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